Don't let safari run too far in the past.

tools/testing/webdriver_test_setup.py

 #!/usr/bin/python
 
 # Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # Run to install the necessary components to run webdriver on the buildbots or
 # on your local machine. 
 # Note: The setup steps can be done fairly easily by hand. This script is 
 # intended to simply and reduce the time for setup since there are a fair number
@@ skipping 20 matching lines @@
   p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, 
       stdin=subprocess.PIPE, shell=True)
   output, stderr = p.communicate(input=stdin)
   if output:
     print output
   if stderr:
     print stderr
 
 def parse_args():
   parser = optparse.OptionParser()
-  parser.add_option('--firefox', '-f', dest='firefox', help='Install Firefox',
+  parser.add_option('--firefox', '-f', dest='firefox', help="Don't install "
+      "Firefox", action='store_true', default=False)

[sra1, 2012/08/18 02:59:02]

This would look better if you put 
  help="xxx"
on its own line, 
  help="xxxx"
       "yyyy"
if necessary.

+  parser.add_option('--chromedriver', '-c', dest='chromedriver', help="Don't "
+      "install chromedriver.", action='store_true', default=False)
+  parser.add_option('--seleniumrc', '-s', dest='seleniumrc', help="Don't "
+      "install the Selenium RC server (used for Safari and Opera tests).",
       action='store_true', default=False)
+  parser.add_option('--python', '-p', dest='python', help="Don't "
+      "install Selenium python bindings.", action='store_true', default=False)
   parser.add_option('--buildbot', '-b', dest='buildbot', action='store_true',
       help='Perform a buildbot selenium setup (buildbots have a different' + \

[sra1, 2012/08/18 02:59:02]

I think the + and \ are both unnecessary

       'location for their python executable).', default=False)
   args, ignored = parser.parse_args()
   return args
 
 def find_depot_tools_location(is_buildbot):
   """Depot_tools is our default install location for chromedriver, so we find
   its location on the filesystem.
   Arguments:
   is_buildbot - True if we are running buildbot machine setup (we can't detect
       this automatically because this script is not run at build time).
@@ skipping 202 matching lines @@
             pip_cmd = os.path.join(loc, 'Scripts', pip_cmd)
             break
     page = urllib2.urlopen(self.SETUPTOOLS_SITE)
     run_cmd('%s %s' % (admin_keyword, python_cmd), page.read())
     page = urllib2.urlopen(self.PIP_SITE)
     run_cmd('%s %s' % (admin_keyword, python_cmd), page.read())
     run_cmd('%s %s install -U selenium' % (admin_keyword, pip_cmd))
 
 def main():
   args = parse_args()
-  SeleniumBindingsInstaller(args.buildbot).run()
-  GoogleCodeInstaller('chromedriver', find_depot_tools_location(args.buildbot),
-      lambda x: 'chromedriver_%(os)s_%(version)s.zip' % x).run()
-  if 'win32' not in sys.platform and 'cygwin' not in sys.platform:
+  if not args.python:
+    SeleniumBindingsInstaller(args.buildbot).run()
+  if not args.chromedriver:
+    GoogleCodeInstaller('chromedriver',
+        find_depot_tools_location(args.buildbot),
+        lambda x: 'chromedriver_%(os)s_%(version)s.zip' % x).run()
+  if not args.seleniumrc:
     GoogleCodeInstaller('selenium', os.path.dirname(os.path.abspath(__file__)),
         lambda x: 'selenium-server-standalone-%(version)s.jar' % x).run()
 
-  if args.firefox:
+  if not args.firefox:
     FirefoxInstaller().run()
 
 if __name__ == '__main__':
   main()